Viscoelastic surfactant based wellbore fluids and methods of use
US9353306B2 · kind B2 · utility
7Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2014 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Dec 19, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/30
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellbore fluid that includes an aqueous based fluid; an amphoteric, viscoelastic surfactant; and a modified starch is disclosed. Methods of drilling subterranean wells, methods of reducing the loss of fluid out of subterranean wells, and methods of completing wellbores using aqueous-based fluids having an ampoteric, viscoelastic surfactant and a modified starch are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.